Semi-analytical Equations for Designing Terahertz Graphene Dipole Antennas on Glass Substrate

Garcia, Marcos E. C.; Oliveira, Rodrigo M. S. de; Rodrigues, Nilton R. N. M.

doi:10.1590/2179-10742022v21i11335

Cited by 2 publications

(7 citation statements)

References 36 publications

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“…In [ 41 ], semi-analytical equations were developed to facilitate the design of rectangular terahertz graphene-based dipole antennas mounted on glass substrates. The equations allow for the direct calculation of the dipole length needed to achieve resonance at a given frequency

, given the antenna width

, graphene chemical potential

, and the dimensions of the feeding structure.…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

“…As is shown in detail by [ 41 ],

can be obtained using an adapted version of the quasi-electrostatic scaling parameter [ 43 ] for cases in which condition

is not met (such as in the cases of the antennas in this paper). The adapted scaling parameter

is given by

in which

is the graphene dipole resonance frequency.…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

“…The adapted scaling parameter

is given by

in which

is the graphene dipole resonance frequency. In [ 41 ], several graphene dipole antennas were simulated using the FDTD method, from which

has been numerically computed and

has been calculated using the given definition. Finally, it can be shown that

in which e is Euler’s number and a and b are functions of

and

[ 41 ].…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

“…In [ 41 ], several graphene dipole antennas were simulated using the FDTD method, from which

has been numerically computed and

has been calculated using the given definition. Finally, it can be shown that

in which e is Euler’s number and a and b are functions of

and

[ 41 ]. Thus, since the values of

, and

were previously defined,

and

can be calculated.…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

“…It is known that, for low THz applications, the width of graphene nanoribbons should measure tens of micrometers because the imaginary part of the effective refractive index is importantly reduced by increasing the graphene sheet width [ 51 ]. As a consequence, the radiation efficiency of the graphene dipole antenna also substantially improves with dipole width in the THz range from approximately 16% to 80%, at resonance frequency, by increasing the dipole width from 2

to 32

(with

eV and

) [ 41 ]. For this reason, we have selected the dipole width

for our pre-optimization dipole model.…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

See 4 more Smart Citations

Multifunctional THz Graphene Antenna with 360∘ Continuous ϕ-Steering and θ-Control of Beam

Dmitriev

Oliveira

Paiva

et al. 2023

Sensors

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A novel graphene antenna composed of a graphene dipole and four auxiliary graphene sheets oriented at 90∘ to each other is proposed and analyzed. The sheets play the role of reflectors. A detailed group-theoretical analysis of symmetry properties of the discussed antennas has been completed. Through electric field control of the chemical potentials of the graphene elements, the antenna can provide a quasi-omnidirectional diagram, a one- or two-directional beam regime, dynamic control of the beam width and, due to the vertical orientation of the dipole with respect to the base substrate, a 360∘ beam steering in the azimuth plane. An additional graphene layer on the base permits control of the radiation pattern in the θ-direction. Radiation patterns in different working states of the antenna are considered using symmetry arguments. We discuss the antenna parameters such as input reflection coefficient, total efficiency, front-to-back ratio, and gain. An equivalent circuit of the antenna is suggested. The proposed antenna operates at frequencies between 1.75 THz and 2.03 THz. Depending on the active regime defined by the chemical potentials set on the antenna graphene elements, the maximum gain varies from 0.86 to 1.63.

show abstract

, given the antenna width

, graphene chemical potential

, and the dimensions of the feeding structure.…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

“…As is shown in detail by [ 41 ],

can be obtained using an adapted version of the quasi-electrostatic scaling parameter [ 43 ] for cases in which condition

is not met (such as in the cases of the antennas in this paper). The adapted scaling parameter

is given by

in which

is the graphene dipole resonance frequency.…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

“…The adapted scaling parameter

is given by

in which

is the graphene dipole resonance frequency. In [ 41 ], several graphene dipole antennas were simulated using the FDTD method, from which

has been numerically computed and

has been calculated using the given definition. Finally, it can be shown that

in which e is Euler’s number and a and b are functions of

and

[ 41 ].…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

“…In [ 41 ], several graphene dipole antennas were simulated using the FDTD method, from which

has been numerically computed and

has been calculated using the given definition. Finally, it can be shown that

in which e is Euler’s number and a and b are functions of

and

[ 41 ]. Thus, since the values of

, and

were previously defined,

and

can be calculated.…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

to 32

(with

eV and

) [ 41 ]. For this reason, we have selected the dipole width

for our pre-optimization dipole model.…”

Section: Pre-optimization Design Of Graphene Dipole Antenna (Without ...mentioning

confidence: 99%

See 3 more Smart Citations

Multifunctional THz Graphene Antenna with 360∘ Continuous ϕ-Steering and θ-Control of Beam

Dmitriev

Oliveira

Paiva

et al. 2023

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

Single-pair Equatorial Dipole-Dipole Underground Imaging Antenna Capacitance Minimization Using Grey Wolf Optimization Algorithm

Baun,

Janairo,

Relano

et al. 2023

2023 IEEE 15th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environ

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Semi-analytical Equations for Designing Terahertz Graphene Dipole Antennas on Glass Substrate

Cited by 2 publications

References 36 publications

Multifunctional THz Graphene Antenna with 360∘ Continuous ϕ-Steering and θ-Control of Beam

Multifunctional THz Graphene Antenna with 360∘ Continuous ϕ-Steering and θ-Control of Beam

Single-pair Equatorial Dipole-Dipole Underground Imaging Antenna Capacitance Minimization Using Grey Wolf Optimization Algorithm

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